diff --git a/ops/glance/config/home.yml b/ops/glance/config/home.yml
index ea818fd..0be73e7 100644
--- a/ops/glance/config/home.yml
+++ b/ops/glance/config/home.yml
@@ -459,20 +459,19 @@
           title: Borg Backup
           title-url: https://borg.kaleschke.info
           cache: 15m
-          url: http://monitoring-prometheus:9090/api/v1/query?query=homelab_borg_last_completed_timestamp_seconds
+          url: http://monitoring-prometheus:9090/api/v1/query?query=(time()-homelab_borg_last_completed_timestamp_seconds)/3600
           subrequests:
             success:
               url: http://monitoring-prometheus:9090/api/v1/query?query=homelab_borg_last_success
           template: |
-            {{ $ts := .JSON.Float "data.result.0.value.1" }}
+            {{ $ageHours := .JSON.Float "data.result.0.value.1" }}
             {{ $archive := .JSON.String "data.result.0.metric.archive" }}
             {{ $succ := .Subrequest "success" }}
             {{ $ok := $succ.JSON.Float "data.result.0.value.1" }}
             {{ $status := $succ.JSON.String "data.result.0.metric.status" }}
-            {{ if eq $ts 0.0 }}
+            {{ if eq (len (.JSON.Array "data.result")) 0 }}
             <div class="text-center color-subdue">Keine Backup-Metrik gefunden</div>
             {{ else }}
-            {{ $ageHours := div (sub (toFloat now.Unix) $ts) 3600.0 }}
             <div class="text-center">
               <div class="size-h2 {{ if gt $ageHours 30.0 }}color-negative{{ else }}color-positive{{ end }}">vor {{ printf "%.0f" $ageHours }} h</div>
               <div class="size-h6 color-subdue" style="margin-top: 4px;">letztes abgeschlossenes Backup</div>